A white rook on the back rank (rank 1), attacked by at least one white piece and at most one black piece, commonly but not exclusively on d1 or e1.
SAE concept sae_3174 fires when a white rook on the back rank (rank 1), attacked by at least one white piece and at most one black piece, commonly but not exclusively on d1 or e1.. It appears in 637 of 9,950 Climbchess puzzles (6.4%), spanning ELO 612–2696 (median 1595).
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This page documents A white rook on the back rank (rank 1), attacked…, one of 4,505 interpretable chess concepts extracted from Leela Chess Zero via sparse autoencoders. The full feature description from our SAE labelling pipeline reads:
A white rook on the back rank (rank 1), attacked by at least one white piece and at most one black piece, commonly but not exclusively on d1 or e1.
This pattern fires in 637 of our 9,950 tagged puzzles. The puzzles where it appears span ELO 612 to 2696, with a median rating of 1595. That distribution tells you whether this is a beginner cue or a master-level subtlety.
Pattern statistics
| Concept ID | sae_3174 |
|---|---|
| Puzzles where it fires | 637 |
| Min ELO | 612 |
| Median ELO | 1595 |
| Max ELO | 2696 |
| Coverage | 6.40% of puzzle set |
Related concepts
The five concepts most often co-firing alongside this one (Jaccard similarity over the puzzle co-occurrence graph) are:
Example puzzles
Below are 10 puzzles spanning the rating distribution. Each links to its own page with full move list and related concepts.
- Puzzle 01fya — ELO 612, themes: endgame, mate, mateIn1, side to move: Black
- Puzzle zxj08 — ELO 842, themes: crushing, middlegame, short, side to move: White
- Puzzle wHhbh_F — ELO 1077, themes: crushing, interference, kingsideAttack, side to move: White
- Puzzle 014p4 — ELO 1243, themes: crushing, master, middlegame, side to move: White
- Puzzle 00mY4 — ELO 1427, themes: advantage, endgame, master, side to move: White
- Puzzle zykZF — ELO 1595, themes: crushing, discoveredAttack, kingsideAttack, side to move: Black
- Puzzle 01olo_M — ELO 1762, themes: advantage, long, middlegame, side to move: Black
- Puzzle zxnrY — ELO 1959, themes: attraction, discoveredAttack, kingsideAttack, side to move: White
- Puzzle zt9tn_F — ELO 2164, themes: advantage, long, middlegame, side to move: Black
- Puzzle pARXA — ELO 2459, themes: backRankMate, deflection, long, side to move: White
How to use this page
If you want to train this pattern, open the Climbchess trainer and filter for puzzles tagged with this concept. The trainer surfaces them at the right difficulty for your current rating, and tracks how often you spot the cue versus miss it. You can also browse the related concepts above to see neighbouring ideas in feature space.
Climbchess concepts are not heuristics written by a human author. Each one corresponds to a single direction in the residual stream of Leela Chess Zero that activates on a specific board feature, then was labelled by reading the top-activating positions. This makes the catalogue exhaustive (every Leela-detectable pattern is in here somewhere) and falsifiable (you can replay our extraction).
Frequently asked
What is SAE concept sae_3174?
A white rook on the back rank (rank 1), attacked by at least one white piece and at most one black piece, commonly but not exclusively on d1 or e1. It is one of 4,505 interpretable features extracted from Leela Chess Zero's residual stream via sparse autoencoders, then labelled by reading the top-activating positions.
Where does this pattern appear?
In 637 tagged puzzles (6.4% of the set), spanning Lichess ELO 612 to 2696 with a median of 1595.
How do I train it?
Open the Climbchess trainer and filter for puzzles tagged with this concept. The trainer adapts difficulty using your live recognition profile and tracks how often you spot the cue versus miss it.
Is it free?
Yes. Climbchess is free forever, with no account, email, or signup required. You can delete your data at any time.